Add a presubmit check to check that a certain set of Android specific files only have deletions.

build/android/findbugs_filter/PRESUBMIT.py

+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+_DELETIONS_ONLY_FILES = (
+    'build/android/findbugs_filter/findbugs_known_bugs.txt',

[M-A Ruel, 2013/01/15 02:16:23]

I thought the path was corrected to you should use 'findbugs_known_bugs.txt' but
maybe it's a bug in presubmit_support.py.

+)
+
+
+def _CheckDeletionsOnlyFiles(input_api, output_api):
+  """Check that a certain listed files only have deletions.
+  """
+  errors = []
+  for f in input_api.AffectedFiles():
+    if f.LocalPath() in _DELETIONS_ONLY_FILES:
+      if f.ChangedContents():
+        errors.append(f.LocalPath())
+  results = []
+  if errors:
+    results.append(output_api.PresubmitError(
+        'Following files should only contain deletions.', errors))
+  return results
+
+
+def CommonChecks(input_api, output_api):
+  output = []
+  output.extend(input_api.canned_checks.RunPylint(
+      input_api,
+      output_api,
+      white_list=[r'PRESUBMIT\.py$'],
+      extra_paths_list=[]))
+
+  output.extend(_CheckDeletionsOnlyFiles(input_api, output_api))
+  return output
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  return CommonChecks(input_api, output_api)
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  return CommonChecks(input_api, output_api)